Griffin Armament Maritime AR-15 Receiver Extension

The Griffin Armament Maritime Receiver Extension is built to Mil-Spec dimensions with six positions of adjustment for your carbine stock. What improves this design of other standard designs is the 7 ports to allow gas, water, oil, and debris to be expelled from the operating system and reduce pressure. This Maritime Carbine Buffer Tube is machined from 7075-T6 aluminum and hardcoat anodized black. Features: 6 position carbine length 7 drainage ports 7075-T6 aluminum construction Hardcoat anodized Griffin Armament produces serious use products with exceptional quality at a fantastic value. Designed with real world experience and built in the U.S.A., their product line has the parts you need. They're built to last a lifetime and backed by their perpetual lifetime warranty.